As we are in the process of enabling -Wall -Werror, this warning generated due to the bug gets converted into an error and the build fails.A patch was provided for libosmocore code to fix compilation in case the bug is triggered, see https://gerrit.osmocom.org/#/c/2955

Best option would be to either patch&rebuild the gcc-arm used on jenkins or update it to a newer version, as we may hit this issue later with other osmocom projects and more patches will need to be provided.

when cross-compiling for ARM in the sysmoBTS case, we should use the exact toolchain/sdk version that we have for the stable distribution (201310). Using different compilers on jenkins and in production doesn't make sense.